interface A1 {
    int aa = 100;
    float ab = 100.00f;
    void pntout(String ss);
}
class B1 implements A1 {
    public void pntout(String ss) {
        System.out.println(ss);
    }
}
public class Eg1_7 {
    public static void main(String[] args) {
//        B1 abc;
//        abc = new B1();
        B1 abc =new B1();
        System.out.println(abc.aa);
        System.out.println(abc.ab);
        abc.pntout("I am a teacher.");
    }
}